The Life-History and Anatomy of Moths 
cases they are but very feebly developed, in others they attain 
relatively enormous proportions and strangely eccentric forms. 
Maxillary palpi are found in some groups. The maxillary palpi 
have two joints. 
The antennae of moths, 
which, as has already been 
pointed out, differ greatly in 
form from those of butterflies, 
are attached to the head in the 
same relative location as in 
butterflies. Antennae may be 
filiform, threadlike, fusiform , 
spindle - shaped, or dilate, 
more or less swollen toward 
the tip. They may be simple , 
i. e ., without lateral projec¬ 
tions, but this is rarely the 
case. The shaft may be set 
with cilia, or small hair-like 
projections on the side of the joints. Such antennae are said to be 
ciliate. Sometimes instead of cilia we find bristle-shaped projec¬ 
tions on the joints. These are called setose antennae. In some 
Fig. i o.— Antenna of Telea polyphemus. Plu¬ 
mose; doubly bipectinate. (From “ Insect Life,” 
Vol. VII. p. 40.) 
forms both cilia and bristles occur on the antennae. When the 
bristles are arranged in clusters on the joints of the antennae they 
are said to be fasciculate. Many forms have tooth-like projections 
on the antennae; in such cases the antennae are described as den- 
Fig. 9.—Antennas of moths. 1, 
fusiform; 2, filiform; 3, dilate; 4, 
ciliate ; 5, bipectinate ; 6, setose- 
ciliate; 7, fasciculate; 8, dentate; 
p, serrate; 10, lamellate. 
